Gas separation: processes – Selective diffusion of gases – Selective diffusion of gases through substantially solid...
Reexamination Certificate
2006-09-25
2008-11-18
Greene, Jason M (Department: 1797)
Gas separation: processes
Selective diffusion of gases
Selective diffusion of gases through substantially solid...
C095S046000, C095S049000, C095S050000, C095S054000, C096S007000, C096S009000, C096S011000, C096S012000, C210S640000, C210S641000, C210S649000, C208S20800M, C208S218000, C585S818000, C585S819000, C423S244010
Reexamination Certificate
active
07452405
ABSTRACT:
A system for producing an auxiliary fuel stream containing a low concentration of sulfur compounds from a primary fuel stream includes a first separation stage to separate a portion of a primary fuel stream into a first vapor permeate stream and a first retentate stream, a first separation stage partial condenser connected to the first vapor permeate stream condensing a portion of the first vapor permeate stream into a first liquid stage stream and a first vapor stage stream, and a second separation stage partial condenser condensing a portion of the first vapor stage stream into a second liquid stage. The first vapor permeate stream is preferable sent through a vapor phase reactive desulfurization catalyst reactor to condition any sulfur compounds present into species that can be easily separated from the fuel stream. The process includes isolating a first vapor permeate stream and a first retentate stream from a primary fuel stream by passing a portion of the primary fuel stream through a first membrane separation stage, condensing a portion of the first vapor permeate stream in a first separation stage partial condenser into a first liquid stage stream and a first vapor stage stream, and passing the first vapor stage stream through a desulfurization reactor. The stream may then be processed through a sorbent bed to effectively remove the sulfur compounds.
REFERENCES:
patent: 4978439 (1990-12-01), Carnell et al.
patent: 5256296 (1993-10-01), Baker et al.
patent: 6187987 (2001-02-01), Chin et al.
patent: 6649061 (2003-11-01), Minhas et al.
patent: 6702945 (2004-03-01), Saxton et al.
patent: 6755975 (2004-06-01), Vane et al.
patent: 6896796 (2005-05-01), White et al.
patent: 6899743 (2005-05-01), Wijmans et al.
patent: 7018527 (2006-03-01), White et al.
patent: 7041212 (2006-05-01), White et al.
patent: 7048846 (2006-05-01), White et al.
patent: 2002/0139713 (2002-10-01), Plummer et al.
patent: 2003/0010205 (2003-01-01), Bikson et al.
patent: 2005/0067323 (2005-03-01), Balko
Balko, Jeff, et al., “Membrane Separation for Producing ULS Gasoline,” PTQ, Spring 2003.
Ito, Eri and Van Veen, J.A. Rob, “On Novel Processes for Removing Sulphur from Refinery Streams,” Catalysis Today, 2006, Elsevier, The Netherlands.
Zhao, Xinjin, et al., “Membrane Separation for Clean Fuels,” PTQ, Summer 2004.
Duraiswamy Kandaswamy
Woods Richard Root
Greenberg & Traurig, LLP
Greene Jason M
Intelligent Energy, Inc.
Krietzman Mark H.
Wahl John
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